The control-query snapshot tests panicked on the Windows GitHub runner
because git's default core.autocrlf=true converted fixture files
(src/control/snapshots/*.json) to CRLF on checkout, while the
in-memory JSON output is LF. trim_end() only strips trailing newlines,
not interior \r, so every snapshot comparison mismatched.
Two defenses:
1. .gitattributes: pin src/control/snapshots/*.json to text eol=lf so
future Windows checkouts keep the fixtures LF-only regardless of
local git config.
2. src/control/queries.rs (assert_snapshot): replace \r\n with \n in
the expected text before comparison, so any future
re-introduction of CRLF (a contributor with non-LF editor settings,
a different runner, etc.) doesn't surface as a snapshot mismatch.
